app: catch errors in main

app.tsx

@@ -65,6 +65,7 @@ App.start({
     instanceName: "caelestia",
     icons: "assets/icons",
     async main() {
+        try {
             const now = Date.now();
 
             await initConfig();
@@ -89,6 +90,9 @@ App.start({
             });
 
             console.log(`Caelestia started in ${Date.now() - now}ms`);
+        } catch (e) {
+            console.error(e);
+        }
     },
     requestHandler(request, res) {
         if (request === "reload-css") loadStyleAsync().catch(console.error);